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python
class A: # Defines a class named ‘A’.
def __init__(self, x): # Special method called ‘__init__’ that initializes an instance of the class.
self.x = x # Sets an attribute ‘x’ of the instance to the value passed during instantiation.
a = A(10) # Creates an instance ‘a’ of the class ‘A’, passing the value 10 to the ‘__init__’ method.
print(a.x) # Prints the value of the attribute ‘x’ of the instance ‘a’.
Here’s a step-by-step explanation:
– `class A:` starts the definition of a class named `A`. Classes are blueprints for creating objects (instances).
– `def __init__(self, x):` defines the initializer method, `__init__`, which is automatically called when a new instance of the class is created. The `self` parameter refers to the instance itself.
– `self.x = x` assigns the value passed as `x` when the class instance is created to the instance attribute `x`. Instance attributes are values that are specific to a particular instance of a class.
– `a = A(10)` creates a new instance of the class `A`, passing `10` as the argument to the `__init__` method. This value is assigned to the instance attribute `x`.
– `print(a.x)` accesses the attribute `x` of the instance `a` and prints its value, which is `10`.
The output of the code will be:
10
This demonstrates how to define a class, create an instance, set instance attributes, and access them in Python.
This is because `my_func` (which is `inner_func`) prints the value of `x` that was captured during the execution of `outer_func`.
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